CN101404605A - Ethernet E1 bidirectional looped network system - Google Patents
Ethernet E1 bidirectional looped network system Download PDFInfo
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- CN101404605A CN101404605A CNA2008102175236A CN200810217523A CN101404605A CN 101404605 A CN101404605 A CN 101404605A CN A2008102175236 A CNA2008102175236 A CN A2008102175236A CN 200810217523 A CN200810217523 A CN 200810217523A CN 101404605 A CN101404605 A CN 101404605A
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Abstract
The invention relates to an Ethernet E1 bidirectional loop system which comprises a main node and at least one slave node. Line ports of all nodes are connected into a bidirectional loop. Every node is provided with a ring protection module basing on a bidirectional E1 network bridge and a bidirectional transmission cable. The ring protection module comprises an Ethernet data switching unit, an Ethernet transmission unit, two E1 bridge switching units and an OAM control unit. The Ethernet E1 bidirectional loop system which is provided with OAM function inherits and develops the advantages of the present annular network and information interaction is provided among all node devices. Diagnosis and remote control abilities are provided for the node devices. The network survival ability is improved greatly, and abundant system self-diagnosis contents are also provided.
Description
One, affiliated technical field
The invention belongs to communication network technology, relate in particular to a kind of bi-directional ring self-healing network system that possesses OAM(Operation Administration Maintenance) based on E1 bridge (connection Ethernet and E1).
Two, background technology
That existing E1 transmission has is starlike, chain and ring-type networking mode.Starlike group network system constitutes simple, but utilization ratio of transmission resources is low; The chain networking overcomes the shortcoming that each node is monopolized transmission channel, realizes whole piece link sharing transfer resource, but also exists the shortcoming of survivability difference.The ring-type group network system that has existed now (application number: 200610020385.3 publication numbers: CN1812364) inherited the advantage that transfer resource is shared in the chain networking, but the spanning tree algorithm STP that utilizes switching equipment detects, there is the defective that the reaction time is long, information is few in the control loop state, do not have the self-diagnosis of trouble cutting capacity, can not the fault location point; Still there are system layout and defective difficult in maintenance, that operating cost is high, the working service cost height in later stage.
In the network of service quality that provides safeguard, OAM(Operation Administration Maintenance) is particularly important.All defined corresponding OAM(Operation Administration Maintenance) among traditional SDH/SONET and the ATM, yet in the existing Ethernet E1 transmission, but do not adopt OAM(Operation Administration Maintenance), this makes in the Ethernet system, particularly the failure diagnosis in the ring-type control loop and the ability of maintenance lack, and still will adopt traditional approach to handle.
Three, summary of the invention
Based on this, the object of the present invention is to provide a kind of high reliability Ethernet E1 bidirectional looped network system of integrated OAM(Operation Administration Maintenance), to remedy the problem that the E1 looped network reliability is not high, difficult in maintenance in the prior art, application cost is high.
The present invention is achieved in that
A kind of Ethernet E1 bidirectional looped network system, it comprises that a host node and at least one are from node.Line port between all nodes connects to form bidirectional loop network, it is characterized in that, for each node, has ring protection module and transmitted in both directions cable based on two-way E1 bridge.Constituting of ring protection module: Ethernet data crosspoint, Ethernet transmission unit, two-way E1 bridge converts unit, OAM control unit.Information exchange, transmission can be finished by the Ethernet data crosspoint in described Ethernet transmission unit, E1 bridge converts unit, and the OAM control unit also can be by E1 bridge converts unit transmitting-receiving OAM signaling data.The ring protection module has two E1 line ports (E1W and E1E) and more than one Ethernet tributary port (FE).Two E1 line ports respectively connect the cable (totally two cables are received/sent out to every side) of a side, for convenience we with its be divided into west (West) to E1 (abbreviating E1W as) circuit, east (East) to E1 (being called for short E1E) line port.The Ethernet tributary port is supplied with the upper and lower biography Ethernet data of user, docks with netting twine with the port of user's ethernet device.
The effect of ring protection module: with Ethernet branch road packet intersect, east is entered in conversion or get on to circuit in the west, or from east or swap out Ethernet data bag and exchange according to MAC of the west side line port line signal transfer of receiving; Reach the purpose of east/west side track data intercommunication, east/west side track data turnover Ethernet tributary port (the upper and lower biography of user data).
Described ring protection module is a 2M ring protection module.Certainly other mode or use in also can adopt the ring protection module of other capacity such as 4M for example.
Described E1 bridge converts unit comprises E1 line port, E1 lightning protection circuit, E1 transformer, protocol conversion chip, links to each other in order.The protocol conversion chip also links to each other with the Ethernet data crosspoint.
Described Ethernet transmission unit comprises Ethernet tributary port, lightning protection circuit, Ethernet transformer, links to each other in order.The Ethernet data crosspoint directly links to each other with the Ethernet transformer.
Described Ethernet transmission unit comprises at least one Ethernet tributary port, can finish exchanges data between these Ethernet tributary ports, and these Ethernet interfaces are together as local data access port (LAN).
The interconnected of adjacent node finished in described E1 bridge converts unit, and two-way E1 circuit is connected to form loop network system with thing side adjacent node respectively.Node data can send to adjacent node by E1 bridge converts unit, and is transferred to next node by this node again, and the node transparent transmission is until destination node one by one.
Described Ethernet data crosspoint is finished the exchanges data between E1 bridge unit, the Ethernet interface all of the port, reaches the mutual purpose of lan data of each node.All nodes are formed the WAN of an intercommunication.
Described OAM control unit is by E1 circuit transmitting-receiving OAM signaling, analytical system operating state, control module action and state exchange.
The APS based on the OAM information of system own of this Ethernet E1 bidirectional looped network system (Auto ProtectSwitch) protection, adopt following steps:
A) host node (Master) sends the OAM signaling and detects loop network loop from the thing both direction, the OAM signaling transmits with annulus, make an E1 line interface of host node itself be in data forward state (working), another E1 line interface is in data discarding state (disabled).The Ethernet path of host node handle annular is cut to oneself the chain Ethernet data passage as starting point and terminal point.
B) in described system, break down; the E1 line interface of the 2M ring protection module of point of interruption both sides becomes data discarding state (disabled); host node (Master) then all changes the E1 line interface of both sides into data forward state (working); system transition is for being the chain Ethernet data passage of two end points with point of interruption both sides; by the OAM signaling on the transmission channel, the warning information of the point of interruption and positional information are collected on the OAM turnkey console.
C) when fault was got rid of, the OAM signaling reflected the change of circuit, and all nodes are made action according to signaling information; Line interface working of host node, another disabled is from the whole working of node line interface.
In the present invention; host node equipment and (at least one) connect into the bi-directional ring networking in twos from the E1 line port between the node device; OAM signaling detection ring l network by the transmission of host node equipment; by OAM signalling analysis communication connection status and control working, the disabled state variation of E1 line interface; play the effect of APS bidirectional protective, breakpoint self-healing, thereby guarantee that Ethernet data normally transmits in the E1 loop network.Each node in the looped network all has the Ethernet data function of exchange, multichannel Ethernet data interface externally is provided, can both carry out exchanges data between 2 road E1 interfaces, the multichannel Ethernet interface, thereby local ethernet (LAN) data that realize node exchange to other above node by this two-way E1 ring, and then realize that the Ethernet intercommunication of each node forms a wide area network.
Interruption on the loop on any light path or the circuit all can cause the transmission of OAM signaling to change, and node device forms the logic fracture, becomes two link work according to the variation of OAM signaling, and any Single Point of Faliure can not influence communication service.And new OAM transmission link is reflected in the new network topological diagram, indicates the fault point and can pass through the alarm of OAM webmaster platform.System not only possesses the self-healed protection function, also possesses fault warning and analysis ability.System also possesses the ability of smooth working under the link group net state simultaneously, and OAM information can be reacted the position relation of the node of chain connection, by the variation and the circuit warning information of record analysis position, finds out position of failure point.Only need to do corresponding reparation and can return to the loop normal operating conditions, bring convenience to maintenance work according to failure diagnosis and analysis result.
In a word, the Ethernet E1 bidirectional looped network system that possesses OAM (operate Operation, manage Administration, safeguard Maintenance) function, inherit and developed existing ring-type networking advantage, and between all node devices information interaction is arranged, provide diagnosis and remote control ability node device; Not only improved network survivability ability (comprising fault incidence control and error protection reaction time) greatly, abundant system autodiagnosis content can also be provided.After fault takes place, can reduce operation easier greatly in the process of manual intervention, reduce manpower, time input.OAM(Operation Administration Maintenance) is very important in public telecom network, and it can simplify network operation, supervising network performance and reduction network operation cost.
Four, description of drawings:
Fig. 1 is the 2M ring protection modular circuit structure chart that the present invention implements,
Fig. 2 is the Ethernet E1 bidirectional loop network pie graph that the present invention implements,
Fig. 3 is the Ethernet E1 bidirectional loop network protection schematic diagram of movements that the present invention implements,
Fig. 4 is the system OAM signaling Principle of Communication figure that the present invention implements,
Fig. 5 is that the OAM signaling that the present invention implements changes the APS view into.
Five, embodiment:
With embodiment the present invention is described in further detail with reference to the accompanying drawings below:
As shown in Figure 1, comprise Ethernet transmission unit 11, two-way E1 bridge converts unit 12, Ethernet data crosspoint 13, OAM control unit 14 in the 2M ring protection module.Can carry out data interaction, conversion and forwarding between described Ethernet transmission unit 11 and the two-way E1 bridge converts unit 12; Thereby realize the intercommunication mutually arbitrarily of a plurality of Ethernet branch roads (FE) interface and two-way E1 circuit.Data can directly be transmitted to other one road E1 bridge retransmission unit 12 from one road E1 bridge converts unit 12, finish data penetration transmission; Also can finish the two-way forwarding of FE interface and this two-way e1 port, realize remote data communication.
Ethernet data crosspoint 13 is two layers of exchange chip of Ethernet of a multiport.It is responsible for Path selection, the forwarding work of all Ethernets (business) data.The core of whole Ethernet E1 bidirectional looped network system is exactly an Ethernet data crosspoint 13, and 12 of bridge converts unit are to finish the extension of the FE interface of Ethernet data crosspoint 13 to the E1 network.
Shown in Figure 2, present embodiment comprises that a host node a and 3 are from node b, c, d.
1, for supervisory control system, transmission link is an annular: the E1W port that originates in the 2M ring protection module access device of a of Surveillance center, transmission path is: module a → a_E1W → b_E1E → module b → b_E1W → c_E1E → module c → c_E1W → d_E1E → module d → d_E1W → a_E1E ends at the E1E port of the 2M ring protection module access device of a; In base station side, transmission equipment need provide two groups of E1 electrical interfaces (every group of E1 comprises the transmitting-receiving both direction) to dock with the E1 line interface of 2M ring protection module; 2M ring protection module couples together these two groups of E1 by inter-process, realizes that loop is communicated with; In Surveillance center, each ring also needs two groups of E1 interfaces to link to each other with access device, so just can guarantee to realize the defencive function of 2M ring.
2, for transmission network, in fact not the notion of " ring ", but the notion of " chain "; Only need get final product for opening a 2M link between per two adjacent websites, more than figure is an example, need open 4 road 2M link: a_E1W ← → b_E1E, b_E1W ← → c_E1E, c_E1W ← → d_E1E, d_E1W ← → a_E1E; At each node, these links are not have direct-connectedly, but connect together by 2M ring protection module transparent transmission; For this 4 road 2M link,, can use the 2M of same " time slot " numbering in the optical loop for saving resource; More than figure is an example, supposes that this optical loop is 155M, comprises 63 2M links, and these 4 sections links can use the 2M of same numbering so, as all using #1 2M link.
3, at each node, transmission equipment need provide two groups of e1 ports to link to each other with 2M ring protection module (comprise 2 and receive 2 totally 4 splicing ears); In Surveillance center, at each ring, transmission equipment need provide two groups of e1 ports to link to each other with access device (comprise 2 and receive 2 totally 4 splicing ears) equally.
4, the ethernet device of all node users is linked on the Ethernet tributary port of 2M ring protection module, is equivalent to be in the local area network (LAN) of same Ethernet connection.2M ring protection module is equivalent to the Ethernet switch of 3 ports, and the E1 line interface is equal to the extension of Ethernet netting twine.
As Fig. 2, the 3rd, this system implements the communication self-healing schematic diagram of ether E1 bidirectional loop network,
1. when normally moving, all modules are formed an Ethernet Circle via transmission; Initiatively close an E1 interface (disabled) on the direction module this moment that is positioned at Surveillance center, the normal transceive data of another one e1 port (working), and loop is chopped off to being the link of two starting points with the E1 mouth of closing.As Fig. 3, just often, the E1E mouth on Surveillance center the right is closed (disabled), becomes link: a ← → b ← → c ← → d
2. transmission (light or E1) is when breaking down, and 2 directions that are positioned at the module of Surveillance center all lead directly to work (working), and the e1 port on both sides, fault point all stops to receive and dispatch Ethernet data (disabled); It is the link of two starting points that loop is fractured into the fault point.As Fig. 3, transmission is interrupted between node c and the node d, becomes link: d ← → a ← → b ← → c
3. when 2M ring protection module broke down, 2 directions of host node module all led directly to work (working); It is the link of two starting points that loop is fractured into the malfunctioning module both sides.In Fig. 2, if node b fault causes the data can't transparent transmission, then become link: c ← → d ← → a
4. host node module (a point) conversion that can collect above these links, and by the alarm of webmaster program.The network maintenance staff can according to webmaster program record the loop breakpoint, fault location reason rapidly.System is that network operation is saved great amount of manpower and time.
As Fig. 4 is the OAM signaling Principle of Communication figure that the present invention implements.
1. as comprising among the figure that a host node Master a and 3 are from node Slave b, Slave c, Slave d.The 2M guard ring module of host node Master a sends and detects signaling: send loop detection order (looptest West to East) from the west to mouth, receive at the east orientation mouth; Send loop detection order (looptest East to West) from the east orientation mouth, receive to mouth in the west.All be forwarded on the another one E1 circuit additional simultaneously self information receiving the OAM signaling that receives from an E1 circuit from node at each.
The E1W of Master a sends looptest W to E order allows the E1E of Slave b receive, Slave b in signaling behind the additional self information E1W from oneself send again, transmit successively until the E1E of Master a port and receive and analyze the signaling content, other direction in like manner.Master a detects signaling by OAM and gets access to running state information and the network location information that all Slave are ordered.
2.Master configuration OAM webmaster platform in a place is responsible for reading the Slave nodal information that the 2M guard ring module of Master a gets access to; OAM webmaster platform can show with graphics context mode analyze, comprehensively obtain network operation state from nodal information; Network operation state writes in the database, with usefulness for future reference.
3.OAM the webmaster platform is connected to the 2M guard ring module of Master a, and the OAM signaling transmission order that can see through this module is moved according to the OAM webmaster platform command execution that receives from node module, thereby realized remote control function to from node module.
As Fig. 5 is that the OAM signaling that the present invention implements changes the APS view into.
1. as comprising a host node Master a and 3 among Fig. 5 from node Slave b, Slave c, Slaved, the transmission between Slave c and the Slave d is interrupted.The 2M guard ring module of host node Master a sends and detects signaling: send loop detection order (looptest W to E) from the west to mouth; Send loop detection order (looptest E to W) from the east orientation mouth, the point of interruption is arranged midway and can not arrive the another one direction; The E1E line interface of Slave c receives after the looptest signaling and is forwarded on the E1W line interface, and Slave c finds that the E1W port of oneself breaks down simultaneously, and state-transition is disabled, and sends the loopbreak signaling from E1E; Make Master a receive the loopbreak signaling and two E1 line interface states are all transferred to working.In like manner, the Slave d of the other side of the point of interruption also is the same.
2. all Slave nodes add self information when transparent transmission looptest or loopbreak signaling, and the Master node receives looptest or loopbreak signaling and therefrom collects the Slave nodal information.OAM webmaster platform is collected loop and is changed and provide alarm and analysis result, improves the automation of loop diagnosis greatly, reduces maintenance cost.
Claims (8)
1, a kind of Ethernet E1 bidirectional looped network system, it comprises a host node and at least one from node, and the line port between all nodes connects to form bidirectional loop network, it is characterized in that, for each node, have ring protection module and transmitted in both directions cable based on two-way E1 bridge; Constituting of ring protection module: Ethernet data crosspoint, Ethernet transmission unit, two-way E1 bridge converts unit, OAM control unit; Information exchange, transmission are finished by the Ethernet data crosspoint in described Ethernet transmission unit, E1 bridge converts unit; the OAM control unit is by E1 bridge converts unit transmitting-receiving OAM signaling data; the ring protection module has two E1 line ports and more than one Ethernet tributary port, and two E1 line ports respectively connect the cable of a side.
2, Ethernet E1 bidirectional looped network system as claimed in claim 1 is characterized in that described ring protection module is a 2M ring protection module.
3, Ethernet E1 bidirectional looped network system as claimed in claim 1, it is characterized in that described E1 bridge converts unit comprises E1 line port, E1 lightning protection circuit, E1 transformer, protocol conversion chip, link to each other in order, the protocol conversion chip also links to each other with the Ethernet data crosspoint.
4, Ethernet E1 bidirectional looped network system as claimed in claim 1, it is characterized in that described Ethernet transmission unit comprises Ethernet tributary port, lightning protection circuit, Ethernet transformer, link to each other in order, the Ethernet data crosspoint directly links to each other with the Ethernet transformer.
5, Ethernet E1 bidirectional looped network system as claimed in claim 1, it is characterized in that described Ethernet transmission unit comprises at least one Ethernet tributary port, can finish exchanges data between these Ethernet tributary ports, these Ethernet interfaces are together as local data access port (LAN).
6, Ethernet E1 bidirectional looped network system as claimed in claim 1, it is characterized in that described E1 bridge converts unit finishes the interconnected of adjacent node, two-way E1 circuit is connected to form loop network system with thing side adjacent node respectively, node data can send to adjacent node by E1 bridge converts unit, and being transferred to next node by this node again, the node transparent transmission is until destination node one by one.
7, Ethernet E1 bidirectional looped network system as claimed in claim 1, it is characterized in that described Ethernet data crosspoint finishes the exchanges data between E1 bridge unit, the Ethernet interface all of the port, reach the mutual purpose of lan data of each node, all nodes are formed the WAN of an intercommunication.
8, Ethernet E1 bidirectional looped network system as claimed in claim 1 is characterized in that described OAM control unit is by E1 circuit transmitting-receiving OAM signaling, analytical system operating state, control module action and state exchange.
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| CNA2008102175236A CN101404605A (en) | 2008-11-04 | 2008-11-04 | Ethernet E1 bidirectional looped network system |
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| CNA2008102175236A CN101404605A (en) | 2008-11-04 | 2008-11-04 | Ethernet E1 bidirectional looped network system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035715A (en) * | 2010-12-17 | 2011-04-27 | 南京中兴力维软件有限公司 | 2M ring network fault diagnosis method and system |
| CN102158383A (en) * | 2010-02-11 | 2011-08-17 | 华为技术有限公司 | Data transmission method, device and system for E1 bidirectional ring network |
| CN102820991A (en) * | 2012-08-08 | 2012-12-12 | 瑞斯康达科技发展股份有限公司 | Realization method and system of ring network-management topological network |
| CN106060062A (en) * | 2016-06-24 | 2016-10-26 | 天津七二通信广播有限公司 | E1 protocol converter for transmitting Ethernet data in E1 circuit |
| CN109581170A (en) * | 2018-12-06 | 2019-04-05 | 贵州电网有限责任公司 | A kind of high frequency response bandwidth Lightning Over-voltage on-line monitoring system |
| CN112033458A (en) * | 2018-05-28 | 2020-12-04 | 蓝箭航天技术有限公司 | Rocket measurement system and fault detection method |
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2008
- 2008-11-04 CN CNA2008102175236A patent/CN101404605A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102158383A (en) * | 2010-02-11 | 2011-08-17 | 华为技术有限公司 | Data transmission method, device and system for E1 bidirectional ring network |
| WO2011097893A1 (en) | 2010-02-11 | 2011-08-18 | 华为技术有限公司 | Method, device and system for transmitting e1 bidirectional looped network data |
| EP2472793A1 (en) * | 2010-02-11 | 2012-07-04 | Huawei Technologies Co., Ltd. | Method, device and system for transmitting e1 bidirectional looped network data |
| EP2472793A4 (en) * | 2010-02-11 | 2012-08-29 | Huawei Tech Co Ltd | Method, device and system for transmitting e1 bidirectional looped network data |
| CN102158383B (en) * | 2010-02-11 | 2013-06-05 | 华为技术有限公司 | Data transmission method, device and system for E1 bidirectional ring network |
| CN102035715A (en) * | 2010-12-17 | 2011-04-27 | 南京中兴力维软件有限公司 | 2M ring network fault diagnosis method and system |
| CN102820991A (en) * | 2012-08-08 | 2012-12-12 | 瑞斯康达科技发展股份有限公司 | Realization method and system of ring network-management topological network |
| CN102820991B (en) * | 2012-08-08 | 2016-05-25 | 瑞斯康达科技发展股份有限公司 | Annular webmaster topological network implementation method and system |
| CN106060062A (en) * | 2016-06-24 | 2016-10-26 | 天津七二通信广播有限公司 | E1 protocol converter for transmitting Ethernet data in E1 circuit |
| CN112033458A (en) * | 2018-05-28 | 2020-12-04 | 蓝箭航天技术有限公司 | Rocket measurement system and fault detection method |
| CN112033458B (en) * | 2018-05-28 | 2022-06-17 | 蓝箭航天技术有限公司 | Rocket measurement system and fault detection method |
| CN109581170A (en) * | 2018-12-06 | 2019-04-05 | 贵州电网有限责任公司 | A kind of high frequency response bandwidth Lightning Over-voltage on-line monitoring system |
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